In winder, yarn tension device is installed in the back of the yarn should be vertically through the metal sheet between the gap, must not be in the yarn in the yarn twists and turns,

When using disc tension device, the uneven tension of yarn will cause considerable additional dynamic tension. Especially when the winding speed increases, this additional tension will increase dramatically.

In the process of warping or weaving, the loosening head will be loosened to cause parking. The larger knob in the loom L not only affects the fracture of the adjacent yarn, but also prevents the yarn from passing through the fully mechanized and box teeth.

On the grooved drum, the grooves that guide the yarns to the central side of the middle of the trough are called the grooves, and the grooves that lead the yarns from the side of the trough back to the middle are called the back grooves.

The way of hand feeling is based on the appearance, color, length, thickness, strength, elasticity, touch and impurity of fiber. It relies on human sensory organs to identify fibers.